Influence of lubricant on nonlinear vibration characteristics of linear rolling guideway
Influence of lubricant on nonlinear vibration characteristics of linear rolling guideway
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DOI：
10.1016/j.triboint.2019.106124
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发表时间：
2020-04
影响因子：
6.2
通讯作者：
Yasunori Sakai;Tomohisa Tanaka
中科院分区：
文献类型：
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作者：
Yasunori Sakai;Tomohisa Tanaka
直线滚动导轨广泛应用于机器人、机床等精密机械系统中。由于导轨的动态特性对机械系统的动力学和姿态精度有很大影响，阐明直线滚动导轨的自振特性对提高机械系统的性能具有重要意义。本文对直线滚动导轨的自振特性进行了研究。讨论了摩擦与自振之间的非线性关系，以及润滑剂规格对非线性自振非线性的影响。此外，由于阻尼机制的不同，润滑剂规格对不同振动模式下阻尼比的影响也不同。
Linear rolling guideways are widely used in precision mechanical systems such as robots and machine tools. Clarifying the natural vibration characteristics of a linear rolling guideway is important for improving the performance of mechanical systems, because the dynamic characteristics of the guideway strongly influence the dynamics and posture accuracy of mechanical systems. This study focuses on the natural vibration characteristics of linear rolling guideways. We discuss both the nonlinear relationship between friction and natural vibration, and the influence of the lubricant specification on the nonlinearity of nonlinear natural vibration. Additionally, the effects of the lubricant specifications on the damping ratio are different for different vibration modes, owing to the differences between the damping mechanisms.